rna.mattest: Array-based t-test
In idroz/bering.rna: Pipelines for microarray analysis

Perform two-sample t-test to evaluate differential expression of genes from two experimental conditions or phenotypes

1	rna.mattest(expr, ref, samp, p.value = NULL)

`expr`	numeric matrix or data.frame consisting of gene expression values
`ref`	numeric vector. Index of reference samples in the array
`samp`	numeric vector. Index of case samples in the array
`p.value`	double or NULL (default). If NULL returns a vector of p-values for each genes, otherwise returns a logical vecotr of genes with p-values below the specified threshold.